Go Back  YotaTech Forums > Toyota SUV & Truck Tech > 86-95 Trucks & 4Runners
Reload this Page >

Questions- Housing & Diff install- 1989 2wd 8 inch where 1991 2wd 7-1/2 was

Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Questions- Housing & Diff install- 1989 2wd 8 inch where 1991 2wd 7-1/2 was

Old 09-24-2015, 07:10 PM
  #1  
Registered User
Thread Starter
 
Odin's Avatar
 
Join Date: Oct 2014
Posts: 905
Likes: 0
Received 2 Likes on 1 Post
Questions- Housing & Diff install- 1989 2wd 8 inch where 1991 2wd 7-1/2 was

I've been experiencing some vibrations when I get into 5th gear and thought it was my U Joints so I put it off for a little bit and didn't drive it much being easy on it if I did. No hauling, no towing, no extended trips. Bring on not one but two leaking rear wheel cylinders so I had to do a complete rear brake job.

While the wheels were off I noticed the top of the Diff was leaking but it wasn't running down to the bottom and it hadn't left any wet spots on the pavement. While neither wheel was touching the ground I spun both wheels one at a time. I can hear something clunking, and that's never good. I crawled under it and pushed and pulled on the driveline to see if the U joints were bad but I didn't see any obvious play. (I need to drop the driveline and rotate a wheel to confirm the joints aren't the problem) I think something in the differential is on it's way out.

My truck is a 1991, 1/2 Ton, 2wd, 22RE, W55 Manual Trans
The door jam is marked Model RN80L-TRMREA
Rear Code F372= 7 & 1/2" Ring Gear, 3.58 Gear Ratio, 2 Pinion, Open Diff




In a salvage yard I found a 1989, 1/2 Ton, Extended Cab Truck, 2wd, V6, R150 Manual Trans.
The door jam is marked Model- VZN90L-CRMDEA
Rear Code G382= 8" Ring Gear, 3.42 Gear Ratio, 2 Pinion, Open Diff

Will this Rear housing and Diff bolt in using my stock driveline and U Joints?
I noticed the driveline between the two is obviously different but I'm betting it's because of the V6 and R150 transmission.


At the salvage yard




Last edited by Odin; 09-25-2015 at 02:14 AM.
Odin is offline  
Old 09-26-2015, 04:05 AM
  #2  
Registered User
iTrader: (1)
 
wyoming9's Avatar
 
Join Date: Apr 2009
Location: I live in New Tripoli Pa out in the woods
Posts: 13,103
Likes: 0
Received 20 Likes on 20 Posts
Red face

Not 100% sure but I think if you look the holes in the differential flange are going to be bigger .

I don`t which would be more of a pain drilling the correct holes on the diff flange or putting the matching flange on your drive shaft

I found this out the hard way . I was lucky tried to put the bigger bolts in the smaller hole.

Going the other way if one was kind of sloppy and tired one might just bolt things together .

Either right away horrific drive line shake .

Or down the road it starts and snaps off the bolts.
wyoming9 is offline  
Old 09-26-2015, 08:25 AM
  #3  
Super Moderator
Staff
iTrader: (1)
 
Terrys87's Avatar
 
Join Date: Aug 2008
Location: Anderson Missouri
Posts: 11,788
Likes: 0
Received 4 Likes on 4 Posts
I don't know for sure but knowing how Toyota switches so many other things between the 4 cylinder and 6 cylinder I would get the 4 cylinder.

I have seen on the two wheel drive models on the front end, they use different sized brake disc and on the rear ends they use different sized slave cylinders. Toyotas parts inventory must be a mile long for what you would think is similar trucks.
Terrys87 is offline  
Old 09-26-2015, 06:56 PM
  #4  
Registered User
Thread Starter
 
Odin's Avatar
 
Join Date: Oct 2014
Posts: 905
Likes: 0
Received 2 Likes on 1 Post
Originally Posted by wyoming9 View Post
Not 100% sure but I think if you look the holes in the differential flange are going to be bigger .
The driveline to the V6 rear is still in the bed of the truck so I could get it and swap that end to my driveline. My driveline needs the U joints replaced so that would be a good time to do it.

Someone informed me where the driveline bolts up is "about" 1 inch longer than the 7 1/2.

.

Last edited by Odin; 09-26-2015 at 08:31 PM.
Odin is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Colington
86-95 Trucks & 4Runners
14
11-11-2018 08:44 PM
Flying91
86-95 Trucks & 4Runners (Build-Up Section)
39
02-03-2017 05:37 PM
jaretstuff
Axles - Suspensions - Tires - Wheels
1
08-04-2015 02:08 PM
Steven.m.paulk
86-95 Trucks & 4Runners (Build-Up Section)
3
07-24-2015 01:44 PM
scottyg486
Offroad Tech
3
07-19-2015 05:34 PM


Thread Tools
Search this Thread
Quick Reply: Questions- Housing & Diff install- 1989 2wd 8 inch where 1991 2wd 7-1/2 was


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: